POWER SOURCE FOR ELECTRON BEAM WELDING

Upto 20kW
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POWER SOURCE FOR ELECTRON BEAM WELDING

Upto 20kW

IONICS has designed, developed and supplied regulated power supplies for Electron Beam Welding equipment using the high frequency resonant / PWM-Controlled switch mode topology.

The entire power source consists of the following:

  • Acceleration Voltage Supply
  • Filament Heating Supply floating on high voltage
  • Bias Supply floating on high voltage
  • Focusing Supply
  • Beam Oscillation supplies (X and Y) 2 sets
  • Beam Deflection supplies (X and Y) 2 sets
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The unit is divided into two parts:

  • The HT Tank
  • The Control Cubicle

The HT tank houses the high voltage section of the Acceleration supply and also the Filament Heating Supply and the Bias Supply, each floating at -100kV.

The control cubicle houses the Beam Oscillation and the Beam Deflection Supplies, electronic controllers for the Acceleration supply, Filament Supply and Bias supply

IONICS - Specialists in HV-HC Power Supplies

TECHNICAL SPECIFICATIONS

PARAMETER SPECIFICATION
Input Voltage 415V ±10% A C, 50Hz, three phase
Protections HRC fuses at mains input
Single phasing preventer
Line filter at mains input
Thermal overload relays
Various interlocks
Controls & Signals on Control Panel for all the power supplies Key switch to enable/disable the whole system
Emergency OFF push button
Selector switch for local/remote selection
ON/ OFF push buttons
10 turn potentiometers for voltage & current control
LED indications for ON/ OFF status
LED indications for fault status
ACCELERATIO N VO LTAGE SUPPLY
Output Voltage Range Upto -100kV DC
Output Current Range* Upto 200mA
Output Voltage Control 0 to rated voltage
Output Current Control 0 to rated current
Line Regulation ≤ 0.1% for 10% variation in input voltage
Load Regulation ≤ 1% for 0 to 100% load variation
Stability < 0.1%
Ripple ≤ 1% rms of rated voltage
Resolution 100V for voltage and 0.1mA for current
Repeatability in Settings < 1%
Protections Against over current, over voltage, over temperature, short-circuit
FILAMENT HEATING SUPPLY
Output Voltage Range Upto 10V DC
Output Current Range Upto70A
Output Voltage Control 0 to rated voltage
Output Current Control 0 to rated current
Insulation Level Floating on -100kV DC
Insulation Level Floating on -100kV DC
Protections Against over current, filament open
BIAS (GRID ELECTRO DE) SUPPLY
Output Voltage Range Upto -3500V DC
Output Current Range Upto 10mA
Output Voltage Control 0 to rated voltage
Insulation Level Floating on -100kV DC
Regulation ±1%
Ripple in Voltage ≤ 1% peak to peak
Stability < 1%
Protections Against short circuit
Control Loop Control loop senses the beam current and required ramp -up timing
FOCUSING SUPPLY
Output Voltage Upto 150V DC
Output Current Upto 15A
Output Voltage Control 0 to rated voltage
Output Current Control 0 to rated current
Ripple ≤ 0.1% rms
Mode of Regulation Constant current-constant voltage
Protections Against over current, short circuit
BEAM OSCILLATIO N SUPPLIES (X & Y) 2 SETS
Output Voltage Upto 10V A C sinusoidal
Output Current Upto 2A
Voltage Control 0 to rated voltage
Frequency Variable from 50Hz to 1kHz
Phase Shift Adjustable phase shift of 0 to 180˚ between the two sets of outputs
Line Regulation ≤ 0.1% for 10% variation in input voltage
Load Regulation ±1%
Protections Against over current
BEAM DEFLECTIO N SUPPLIES (X & Y) 2 SETS
Output Voltage Upto 30V DC
Output Current Upto 5A
Output Voltage Control 0 to rated voltage
Output Current Control 0 to rated current
Polarity Positive / negative (selectable through switch)
Line regulation ≤ 0.1% for 10% variation in input voltage
Load regulation ≤ 0.1%
Ripple ≤ 0.1% rms
Mode of Regulation Constant current-constant voltage
Protections Against over current, short circuit

*Optional. To be specified by the user.